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1370 lines
46 KiB
1370 lines
46 KiB
// Copyright 2018-2019 Mozilla
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//
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// Licensed under the Apache License, Version 2.0 (the "License"); you may not use
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// this file except in compliance with the License. You may obtain a copy of the
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// License at http://www.apache.org/licenses/LICENSE-2.0
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// Unless required by applicable law or agreed to in writing, software distributed
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// under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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// CONDITIONS OF ANY KIND, either express or implied. See the License for the
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// specific language governing permissions and limitations under the License.
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// TODO: change this back to `clippy::cognitive_complexity` when Clippy stable
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// deprecates `clippy::cyclomatic_complexity`.
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#![allow(clippy::complexity)]
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use std::{
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fs,
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path::Path,
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str,
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sync::{Arc, RwLock},
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thread,
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};
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use byteorder::{ByteOrder, LittleEndian};
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use tempfile::Builder;
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use rkv::{
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backend::{
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BackendEnvironmentBuilder, SafeMode, SafeModeDatabase, SafeModeEnvironment,
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SafeModeRwTransaction,
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},
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Rkv, SingleStore, StoreError, StoreOptions, Value, Writer,
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};
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fn check_rkv(k: &Rkv<SafeModeEnvironment>) {
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let _ = k
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.open_single(None, StoreOptions::create())
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.expect("created default");
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let s = k.open_single("s", StoreOptions::create()).expect("opened");
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let reader = k.read().expect("reader");
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let result = s.get(&reader, "foo");
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assert_eq!(None, result.expect("success but no value"));
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}
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/// We can't open a directory that doesn't exist.
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#[test]
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fn test_open_fails_safe() {
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let root = Builder::new()
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.prefix("test_open_fails_safe")
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.tempdir()
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.expect("tempdir");
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assert!(root.path().exists());
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let nope = root.path().join("nope/");
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assert!(!nope.exists());
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let pb = nope.to_path_buf();
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match Rkv::new::<SafeMode>(nope.as_path()).err() {
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Some(StoreError::UnsuitableEnvironmentPath(p)) => {
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assert_eq!(pb, p);
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}
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_ => panic!("expected error"),
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};
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}
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#[test]
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fn test_open_safe() {
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let root = Builder::new()
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.prefix("test_open_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
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check_rkv(&k);
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}
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#[test]
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fn test_open_from_builder_safe() {
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let root = Builder::new()
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.prefix("test_open_from_builder_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let mut builder = Rkv::environment_builder::<SafeMode>();
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builder.set_max_dbs(2);
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let k = Rkv::from_builder(root.path(), builder).expect("rkv");
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check_rkv(&k);
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}
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#[test]
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fn test_open_from_builder_with_dir_safe_1() {
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let root = Builder::new()
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.prefix("test_open_from_builder_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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let mut builder = Rkv::environment_builder::<SafeMode>();
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builder.set_max_dbs(2);
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builder.set_make_dir_if_needed(true);
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let k = Rkv::from_builder(root.path(), builder).expect("rkv");
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check_rkv(&k);
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}
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#[test]
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#[should_panic(expected = "rkv: UnsuitableEnvironmentPath(\"bogus\")")]
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fn test_open_from_builder_with_dir_safe_2() {
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let root = Path::new("bogus");
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println!("Root path: {:?}", root);
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assert!(!root.is_dir());
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let mut builder = Rkv::environment_builder::<SafeMode>();
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builder.set_max_dbs(2);
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let k = Rkv::from_builder(root, builder).expect("rkv");
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check_rkv(&k);
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}
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#[test]
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#[should_panic(expected = "opened: DbsFull")]
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fn test_create_with_capacity_safe_1() {
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let root = Builder::new()
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.prefix("test_create_with_capacity_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 1).expect("rkv");
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check_rkv(&k);
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// This errors with "opened: DbsFull" because we specified a capacity of one (database),
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// and check_rkv already opened one (plus the default database, which doesn't count
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// against the limit).
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let _zzz = k
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.open_single("zzz", StoreOptions::create())
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.expect("opened");
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}
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#[test]
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fn test_create_with_capacity_safe_2() {
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let root = Builder::new()
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.prefix("test_create_with_capacity_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 1).expect("rkv");
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check_rkv(&k);
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// This doesn't error with "opened: DbsFull" because even though we specified a capacity
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// of one (database), and check_rkv already opened one, the default database doesn't
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// count against the limit).
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let _zzz = k.open_single(None, StoreOptions::create()).expect("opened");
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}
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#[test]
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#[should_panic(expected = "opened: SafeModeError(DbNotFoundError)")]
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fn test_open_with_capacity_safe_1() {
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let root = Builder::new()
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.prefix("test_open_with_capacity_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 1).expect("rkv");
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check_rkv(&k);
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let _zzz = k
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.open_single("zzz", StoreOptions::default())
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.expect("opened");
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}
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#[test]
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fn test_open_with_capacity_safe_2() {
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let root = Builder::new()
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.prefix("test_open_with_capacity_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 1).expect("rkv");
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check_rkv(&k);
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let _zzz = k
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.open_single(None, StoreOptions::default())
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.expect("opened");
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}
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#[test]
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fn test_list_dbs_safe_1() {
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let root = Builder::new()
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.prefix("test_list_dbs_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 1).expect("rkv");
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check_rkv(&k);
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let mut dbs = k.get_dbs().unwrap();
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dbs.sort();
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assert_eq!(dbs, vec![None, Some("s".to_owned())]);
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}
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#[test]
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fn test_list_dbs_safe_2() {
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let root = Builder::new()
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.prefix("test_list_dbs_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 2).expect("rkv");
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check_rkv(&k);
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let _ = k
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.open_single("zzz", StoreOptions::create())
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.expect("opened");
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let mut dbs = k.get_dbs().unwrap();
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dbs.sort();
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assert_eq!(
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dbs,
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vec![None, Some("s".to_owned()), Some("zzz".to_owned())]
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);
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}
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#[test]
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fn test_list_dbs_safe_3() {
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let root = Builder::new()
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.prefix("test_list_dbs_safe")
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.tempdir()
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.expect("tempdir");
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println!("Root path: {:?}", root.path());
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fs::create_dir_all(root.path()).expect("dir created");
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assert!(root.path().is_dir());
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let k = Rkv::with_capacity::<SafeMode>(root.path(), 0).expect("rkv");
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let _ = k.open_single(None, StoreOptions::create()).expect("opened");
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let mut dbs = k.get_dbs().unwrap();
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dbs.sort();
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assert_eq!(dbs, vec![None]);
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}
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#[test]
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fn test_round_trip_and_transactions_safe() {
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let root = Builder::new()
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.prefix("test_round_trip_and_transactions_safe")
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.tempdir()
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.expect("tempdir");
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fs::create_dir_all(root.path()).expect("dir created");
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let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
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let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
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{
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let mut writer = k.write().expect("writer");
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sk.put(&mut writer, "foo", &Value::I64(1234))
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.expect("wrote");
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sk.put(&mut writer, "noo", &Value::F64(1234.0.into()))
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.expect("wrote");
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sk.put(&mut writer, "bar", &Value::Bool(true))
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.expect("wrote");
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sk.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
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.expect("wrote");
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assert_eq!(
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sk.get(&writer, "foo").expect("read"),
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Some(Value::I64(1234))
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);
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assert_eq!(
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sk.get(&writer, "noo").expect("read"),
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Some(Value::F64(1234.0.into()))
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);
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assert_eq!(
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sk.get(&writer, "bar").expect("read"),
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Some(Value::Bool(true))
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);
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assert_eq!(
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sk.get(&writer, "baz").expect("read"),
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Some(Value::Str("héllo, yöu"))
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);
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// Isolation. Reads won't return values.
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let r = &k.read().unwrap();
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assert_eq!(sk.get(r, "foo").expect("read"), None);
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assert_eq!(sk.get(r, "bar").expect("read"), None);
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assert_eq!(sk.get(r, "baz").expect("read"), None);
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}
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// Dropped: tx rollback. Reads will still return nothing.
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{
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let r = &k.read().unwrap();
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assert_eq!(sk.get(r, "foo").expect("read"), None);
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assert_eq!(sk.get(r, "bar").expect("read"), None);
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assert_eq!(sk.get(r, "baz").expect("read"), None);
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}
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{
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let mut writer = k.write().expect("writer");
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sk.put(&mut writer, "foo", &Value::I64(1234))
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.expect("wrote");
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sk.put(&mut writer, "bar", &Value::Bool(true))
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.expect("wrote");
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sk.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
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.expect("wrote");
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assert_eq!(
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sk.get(&writer, "foo").expect("read"),
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Some(Value::I64(1234))
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);
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assert_eq!(
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sk.get(&writer, "bar").expect("read"),
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Some(Value::Bool(true))
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);
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assert_eq!(
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sk.get(&writer, "baz").expect("read"),
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Some(Value::Str("héllo, yöu"))
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);
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writer.commit().expect("committed");
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}
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// Committed. Reads will succeed.
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{
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let r = k.read().unwrap();
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assert_eq!(sk.get(&r, "foo").expect("read"), Some(Value::I64(1234)));
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assert_eq!(sk.get(&r, "bar").expect("read"), Some(Value::Bool(true)));
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assert_eq!(
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sk.get(&r, "baz").expect("read"),
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Some(Value::Str("héllo, yöu"))
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);
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}
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{
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let mut writer = k.write().expect("writer");
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sk.delete(&mut writer, "foo").expect("deleted");
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sk.delete(&mut writer, "bar").expect("deleted");
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sk.delete(&mut writer, "baz").expect("deleted");
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assert_eq!(sk.get(&writer, "foo").expect("read"), None);
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assert_eq!(sk.get(&writer, "bar").expect("read"), None);
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assert_eq!(sk.get(&writer, "baz").expect("read"), None);
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// Isolation. Reads still return values.
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let r = k.read().unwrap();
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assert_eq!(sk.get(&r, "foo").expect("read"), Some(Value::I64(1234)));
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assert_eq!(sk.get(&r, "bar").expect("read"), Some(Value::Bool(true)));
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assert_eq!(
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sk.get(&r, "baz").expect("read"),
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Some(Value::Str("héllo, yöu"))
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);
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}
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// Dropped: tx rollback. Reads will still return values.
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{
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let r = k.read().unwrap();
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assert_eq!(sk.get(&r, "foo").expect("read"), Some(Value::I64(1234)));
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assert_eq!(sk.get(&r, "bar").expect("read"), Some(Value::Bool(true)));
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assert_eq!(
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sk.get(&r, "baz").expect("read"),
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Some(Value::Str("héllo, yöu"))
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);
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}
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{
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let mut writer = k.write().expect("writer");
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sk.delete(&mut writer, "foo").expect("deleted");
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sk.delete(&mut writer, "bar").expect("deleted");
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sk.delete(&mut writer, "baz").expect("deleted");
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assert_eq!(sk.get(&writer, "foo").expect("read"), None);
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assert_eq!(sk.get(&writer, "bar").expect("read"), None);
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assert_eq!(sk.get(&writer, "baz").expect("read"), None);
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writer.commit().expect("committed");
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}
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// Committed. Reads will succeed but return None to indicate a missing value.
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{
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let r = k.read().unwrap();
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assert_eq!(sk.get(&r, "foo").expect("read"), None);
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assert_eq!(sk.get(&r, "bar").expect("read"), None);
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assert_eq!(sk.get(&r, "baz").expect("read"), None);
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}
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}
|
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|
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#[test]
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fn test_single_store_clear_safe() {
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let root = Builder::new()
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.prefix("test_single_store_clear_safe")
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.tempdir()
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.expect("tempdir");
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fs::create_dir_all(root.path()).expect("dir created");
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let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
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let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
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{
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let mut writer = k.write().expect("writer");
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sk.put(&mut writer, "foo", &Value::I64(1234))
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.expect("wrote");
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sk.put(&mut writer, "bar", &Value::Bool(true))
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.expect("wrote");
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sk.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
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.expect("wrote");
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writer.commit().expect("committed");
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}
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{
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let mut writer = k.write().expect("writer");
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sk.clear(&mut writer).expect("cleared");
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writer.commit().expect("committed");
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}
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{
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let r = k.read().unwrap();
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let iter = sk.iter_start(&r).expect("iter");
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assert_eq!(iter.count(), 0);
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}
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}
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|
|
|
#[test]
|
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#[should_panic(expected = "KeyValuePairNotFound")]
|
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fn test_single_store_delete_nonexistent_safe() {
|
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let root = Builder::new()
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.prefix("test_single_store_delete_nonexistent_safe")
|
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.tempdir()
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.expect("tempdir");
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fs::create_dir_all(root.path()).expect("dir created");
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|
|
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let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
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let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
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|
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let mut writer = k.write().expect("writer");
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sk.delete(&mut writer, "bogus").unwrap();
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}
|
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|
|
#[test]
|
|
#[cfg(feature = "db-dup-sort")]
|
|
fn test_multi_put_get_del_safe() {
|
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let root = Builder::new()
|
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.prefix("test_multi_put_get_del_safe")
|
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.tempdir()
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.expect("tempdir");
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fs::create_dir_all(root.path()).expect("dir created");
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|
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let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
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let multistore = k.open_multi("multistore", StoreOptions::create()).unwrap();
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|
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let mut writer = k.write().unwrap();
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multistore
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.put(&mut writer, "str1", &Value::Str("str1 foo"))
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.unwrap();
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multistore
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.put(&mut writer, "str1", &Value::Str("str1 bar"))
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.unwrap();
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multistore
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.put(&mut writer, "str2", &Value::Str("str2 foo"))
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.unwrap();
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multistore
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.put(&mut writer, "str2", &Value::Str("str2 bar"))
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.unwrap();
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multistore
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.put(&mut writer, "str3", &Value::Str("str3 foo"))
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.unwrap();
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multistore
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.put(&mut writer, "str3", &Value::Str("str3 bar"))
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.unwrap();
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writer.commit().unwrap();
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|
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let writer = k.write().unwrap();
|
|
{
|
|
let mut iter = multistore.get(&writer, "str1").unwrap();
|
|
let (id, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!((id, val), (&b"str1"[..], Value::Str("str1 bar")));
|
|
let (id, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!((id, val), (&b"str1"[..], Value::Str("str1 foo")));
|
|
}
|
|
writer.commit().unwrap();
|
|
|
|
let mut writer = k.write().unwrap();
|
|
multistore
|
|
.delete(&mut writer, "str1", &Value::Str("str1 foo"))
|
|
.unwrap();
|
|
assert_eq!(
|
|
multistore.get_first(&writer, "str1").unwrap(),
|
|
Some(Value::Str("str1 bar"))
|
|
);
|
|
multistore
|
|
.delete(&mut writer, "str2", &Value::Str("str2 bar"))
|
|
.unwrap();
|
|
assert_eq!(
|
|
multistore.get_first(&writer, "str2").unwrap(),
|
|
Some(Value::Str("str2 foo"))
|
|
);
|
|
multistore.delete_all(&mut writer, "str3").unwrap();
|
|
assert_eq!(multistore.get_first(&writer, "str3").unwrap(), None);
|
|
writer.commit().unwrap();
|
|
}
|
|
|
|
#[test]
|
|
#[cfg(feature = "db-dup-sort")]
|
|
fn test_multiple_store_clear_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_multiple_store_clear_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let multistore = k
|
|
.open_multi("multistore", StoreOptions::create())
|
|
.expect("opened");
|
|
|
|
{
|
|
let mut writer = k.write().expect("writer");
|
|
multistore
|
|
.put(&mut writer, "str1", &Value::Str("str1 foo"))
|
|
.unwrap();
|
|
multistore
|
|
.put(&mut writer, "str1", &Value::Str("str1 bar"))
|
|
.unwrap();
|
|
multistore
|
|
.put(&mut writer, "str2", &Value::Str("str2 foo"))
|
|
.unwrap();
|
|
multistore
|
|
.put(&mut writer, "str2", &Value::Str("str2 bar"))
|
|
.unwrap();
|
|
multistore
|
|
.put(&mut writer, "str3", &Value::Str("str3 foo"))
|
|
.unwrap();
|
|
multistore
|
|
.put(&mut writer, "str3", &Value::Str("str3 bar"))
|
|
.unwrap();
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
{
|
|
let mut writer = k.write().expect("writer");
|
|
multistore.clear(&mut writer).expect("cleared");
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
{
|
|
let r = k.read().unwrap();
|
|
assert_eq!(multistore.get_first(&r, "str1").expect("read"), None);
|
|
assert_eq!(multistore.get_first(&r, "str2").expect("read"), None);
|
|
assert_eq!(multistore.get_first(&r, "str3").expect("read"), None);
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_open_store_for_read_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_open_store_for_read_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
|
|
// First create the store, and start a write transaction on it.
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
let mut writer = k.write().expect("writer");
|
|
sk.put(&mut writer, "foo", &Value::Str("bar"))
|
|
.expect("write");
|
|
|
|
// Open the same store for read, note that the write transaction is still in progress,
|
|
// it should not block the reader though.
|
|
let sk_readonly = k
|
|
.open_single("sk", StoreOptions::default())
|
|
.expect("opened");
|
|
writer.commit().expect("commit");
|
|
|
|
// Now the write transaction is committed, any followed reads should see its change.
|
|
let reader = k.read().expect("reader");
|
|
assert_eq!(
|
|
sk_readonly.get(&reader, "foo").expect("read"),
|
|
Some(Value::Str("bar"))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic(expected = "open a missing store")]
|
|
fn test_open_a_missing_store_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_open_a_missing_store_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let _sk = k
|
|
.open_single("sk", StoreOptions::default())
|
|
.expect("open a missing store");
|
|
}
|
|
|
|
#[test]
|
|
#[should_panic(expected = "new failed: FileInvalid")]
|
|
fn test_open_a_broken_store_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_open_a_missing_store_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let dbfile = root.path().join("data.safe.bin");
|
|
fs::write(dbfile, "bogus").expect("dbfile created");
|
|
|
|
let _ = Rkv::new::<SafeMode>(root.path()).expect("new failed");
|
|
}
|
|
|
|
#[test]
|
|
fn test_open_fail_with_badrslot_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_open_fail_with_badrslot_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
|
|
// First create the store
|
|
let _sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
// Open a reader on this store
|
|
let _reader = k.read().expect("reader");
|
|
|
|
// Open the same store for read while the reader is in progress will panic
|
|
let store = k.open_single("sk", StoreOptions::default());
|
|
match store {
|
|
Err(StoreError::OpenAttemptedDuringTransaction(_thread_id)) => (),
|
|
_ => panic!("should panic"),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_create_fail_with_badrslot_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_create_fail_with_badrslot_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
|
|
// First create the store
|
|
let _sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
// Open a reader on this store
|
|
let _reader = k.read().expect("reader");
|
|
|
|
// Open the same store for read while the reader is in progress will panic
|
|
let store = k.open_single("sk", StoreOptions::create());
|
|
match store {
|
|
Err(StoreError::OpenAttemptedDuringTransaction(_thread_id)) => (),
|
|
_ => panic!("should panic"),
|
|
}
|
|
}
|
|
|
|
#[test]
|
|
fn test_read_before_write_num_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_read_before_write_num_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
// Test reading a number, modifying it, and then writing it back.
|
|
// We have to be done with the Value::I64 before calling Writer::put,
|
|
// as the Value::I64 borrows an immutable reference to the Writer.
|
|
// So we extract and copy its primitive value.
|
|
|
|
fn get_existing_foo(
|
|
store: SingleStore<SafeModeDatabase>,
|
|
writer: &Writer<SafeModeRwTransaction>,
|
|
) -> Option<i64> {
|
|
match store.get(writer, "foo").expect("read") {
|
|
Some(Value::I64(val)) => Some(val),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
let mut existing = get_existing_foo(sk, &writer).unwrap_or(99);
|
|
existing += 1;
|
|
sk.put(&mut writer, "foo", &Value::I64(existing))
|
|
.expect("success");
|
|
|
|
let updated = get_existing_foo(sk, &writer).unwrap_or(99);
|
|
assert_eq!(updated, 100);
|
|
writer.commit().expect("commit");
|
|
}
|
|
|
|
#[test]
|
|
fn test_read_before_write_str_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_read_before_write_str_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
// Test reading a string, modifying it, and then writing it back.
|
|
// We have to be done with the Value::Str before calling Writer::put,
|
|
// as the Value::Str (and its underlying &str) borrows an immutable
|
|
// reference to the Writer. So we copy it to a String.
|
|
|
|
fn get_existing_foo(
|
|
store: SingleStore<SafeModeDatabase>,
|
|
writer: &Writer<SafeModeRwTransaction>,
|
|
) -> Option<String> {
|
|
match store.get(writer, "foo").expect("read") {
|
|
Some(Value::Str(val)) => Some(val.to_string()),
|
|
_ => None,
|
|
}
|
|
}
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
let mut existing = get_existing_foo(sk, &writer).unwrap_or_default();
|
|
existing.push('…');
|
|
sk.put(&mut writer, "foo", &Value::Str(&existing))
|
|
.expect("write");
|
|
|
|
let updated = get_existing_foo(sk, &writer).unwrap_or_default();
|
|
assert_eq!(updated, "…");
|
|
writer.commit().expect("commit");
|
|
}
|
|
|
|
#[test]
|
|
fn test_isolation_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_isolation_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let s = k.open_single("s", StoreOptions::create()).expect("opened");
|
|
|
|
// Add one field.
|
|
{
|
|
let mut writer = k.write().expect("writer");
|
|
s.put(&mut writer, "foo", &Value::I64(1234)).expect("wrote");
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
{
|
|
let reader = k.read().unwrap();
|
|
assert_eq!(s.get(&reader, "foo").expect("read"), Some(Value::I64(1234)));
|
|
}
|
|
|
|
// Establish a long-lived reader that outlasts a writer.
|
|
let reader = k.read().expect("reader");
|
|
assert_eq!(s.get(&reader, "foo").expect("read"), Some(Value::I64(1234)));
|
|
|
|
// Start a write transaction.
|
|
let mut writer = k.write().expect("writer");
|
|
s.put(&mut writer, "foo", &Value::I64(999)).expect("wrote");
|
|
|
|
// The reader and writer are isolated.
|
|
assert_eq!(s.get(&reader, "foo").expect("read"), Some(Value::I64(1234)));
|
|
assert_eq!(s.get(&writer, "foo").expect("read"), Some(Value::I64(999)));
|
|
|
|
// If we commit the writer, we still have isolation.
|
|
writer.commit().expect("committed");
|
|
assert_eq!(s.get(&reader, "foo").expect("read"), Some(Value::I64(1234)));
|
|
|
|
// A new reader sees the committed value. Note that LMDB doesn't allow two
|
|
// read transactions to exist in the same thread, so we abort the previous one.
|
|
reader.abort();
|
|
let reader = k.read().expect("reader");
|
|
assert_eq!(s.get(&reader, "foo").expect("read"), Some(Value::I64(999)));
|
|
}
|
|
|
|
#[test]
|
|
fn test_blob_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_round_trip_blob_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
assert_eq!(sk.get(&writer, "foo").expect("read"), None);
|
|
sk.put(&mut writer, "foo", &Value::Blob(&[1, 2, 3, 4]))
|
|
.expect("wrote");
|
|
assert_eq!(
|
|
sk.get(&writer, "foo").expect("read"),
|
|
Some(Value::Blob(&[1, 2, 3, 4]))
|
|
);
|
|
|
|
fn u16_to_u8(src: &[u16]) -> Vec<u8> {
|
|
let mut dst = vec![0; 2 * src.len()];
|
|
LittleEndian::write_u16_into(src, &mut dst);
|
|
dst
|
|
}
|
|
|
|
fn u8_to_u16(src: &[u8]) -> Vec<u16> {
|
|
let mut dst = vec![0; src.len() / 2];
|
|
LittleEndian::read_u16_into(src, &mut dst);
|
|
dst
|
|
}
|
|
|
|
// When storing UTF-16 strings as blobs, we'll need to convert
|
|
// their [u16] backing storage to [u8]. Test that converting, writing,
|
|
// reading, and converting back works as expected.
|
|
let u16_array = [1000, 10000, 54321, 65535];
|
|
assert_eq!(sk.get(&writer, "bar").expect("read"), None);
|
|
sk.put(&mut writer, "bar", &Value::Blob(&u16_to_u8(&u16_array)))
|
|
.expect("wrote");
|
|
let u8_array = match sk.get(&writer, "bar").expect("read") {
|
|
Some(Value::Blob(val)) => val,
|
|
_ => &[],
|
|
};
|
|
assert_eq!(u8_to_u16(u8_array), u16_array);
|
|
}
|
|
|
|
#[test]
|
|
fn test_sync_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_sync_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let mut builder = Rkv::environment_builder::<SafeMode>();
|
|
builder.set_max_dbs(1);
|
|
{
|
|
let k = Rkv::from_builder(root.path(), builder).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
{
|
|
let mut writer = k.write().expect("writer");
|
|
sk.put(&mut writer, "foo", &Value::I64(1234))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
k.sync(true).expect("synced");
|
|
}
|
|
}
|
|
let k = Rkv::from_builder(root.path(), builder).expect("new succeeded");
|
|
let sk = k
|
|
.open_single("sk", StoreOptions::default())
|
|
.expect("opened");
|
|
let reader = k.read().expect("reader");
|
|
assert_eq!(
|
|
sk.get(&reader, "foo").expect("read"),
|
|
Some(Value::I64(1234))
|
|
);
|
|
}
|
|
|
|
#[test]
|
|
fn test_iter_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_iter_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
// An iterator over an empty store returns no values.
|
|
{
|
|
let reader = k.read().unwrap();
|
|
let mut iter = sk.iter_start(&reader).unwrap();
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
sk.put(&mut writer, "foo", &Value::I64(1234))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "noo", &Value::F64(1234.0.into()))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "bar", &Value::Bool(true))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "héllò, töűrîst", &Value::Str("Emil.RuleZ!"))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "你好，遊客", &Value::Str("米克規則"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
|
|
let reader = k.read().unwrap();
|
|
|
|
// Reader.iter() returns (key, value) tuples ordered by key.
|
|
let mut iter = sk.iter_start(&reader).unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "bar");
|
|
assert_eq!(val, Value::Bool(true));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "baz");
|
|
assert_eq!(val, Value::Str("héllo, yöu"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "foo");
|
|
assert_eq!(val, Value::I64(1234));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "héllò, töűrîst");
|
|
assert_eq!(val, Value::Str("Emil.RuleZ!"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterators don't loop. Once one returns None, additional calls
|
|
// to its next() method will always return None.
|
|
assert!(iter.next().is_none());
|
|
|
|
// Reader.iter_from() begins iteration at the first key equal to
|
|
// or greater than the given key.
|
|
let mut iter = sk.iter_from(&reader, "moo").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Reader.iter_from() works as expected when the given key is a prefix
|
|
// of a key in the store.
|
|
let mut iter = sk.iter_from(&reader, "no").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_iter_from_key_greater_than_existing_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_iter_from_key_greater_than_existing_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let sk = k.open_single("sk", StoreOptions::create()).expect("opened");
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
sk.put(&mut writer, "foo", &Value::I64(1234))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "noo", &Value::F64(1234.0.into()))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "bar", &Value::Bool(true))
|
|
.expect("wrote");
|
|
sk.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
|
|
let reader = k.read().unwrap();
|
|
let mut iter = sk.iter_from(&reader, "nuu").unwrap();
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_multiple_store_read_write_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_multiple_store_read_write_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let s1 = k
|
|
.open_single("store_1", StoreOptions::create())
|
|
.expect("opened");
|
|
let s2 = k
|
|
.open_single("store_2", StoreOptions::create())
|
|
.expect("opened");
|
|
let s3 = k
|
|
.open_single("store_3", StoreOptions::create())
|
|
.expect("opened");
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
s1.put(&mut writer, "foo", &Value::Str("bar"))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "foo", &Value::I64(123)).expect("wrote");
|
|
s3.put(&mut writer, "foo", &Value::Bool(true))
|
|
.expect("wrote");
|
|
|
|
assert_eq!(
|
|
s1.get(&writer, "foo").expect("read"),
|
|
Some(Value::Str("bar"))
|
|
);
|
|
assert_eq!(s2.get(&writer, "foo").expect("read"), Some(Value::I64(123)));
|
|
assert_eq!(
|
|
s3.get(&writer, "foo").expect("read"),
|
|
Some(Value::Bool(true))
|
|
);
|
|
|
|
writer.commit().expect("committed");
|
|
|
|
let reader = k.read().expect("unbound_reader");
|
|
assert_eq!(
|
|
s1.get(&reader, "foo").expect("read"),
|
|
Some(Value::Str("bar"))
|
|
);
|
|
assert_eq!(s2.get(&reader, "foo").expect("read"), Some(Value::I64(123)));
|
|
assert_eq!(
|
|
s3.get(&reader, "foo").expect("read"),
|
|
Some(Value::Bool(true))
|
|
);
|
|
reader.abort();
|
|
|
|
// test delete across multiple stores
|
|
let mut writer = k.write().expect("writer");
|
|
s1.delete(&mut writer, "foo").expect("deleted");
|
|
s2.delete(&mut writer, "foo").expect("deleted");
|
|
s3.delete(&mut writer, "foo").expect("deleted");
|
|
writer.commit().expect("committed");
|
|
|
|
let reader = k.read().expect("reader");
|
|
assert_eq!(s1.get(&reader, "key").expect("value"), None);
|
|
assert_eq!(s2.get(&reader, "key").expect("value"), None);
|
|
assert_eq!(s3.get(&reader, "key").expect("value"), None);
|
|
}
|
|
|
|
#[test]
|
|
fn test_multiple_store_iter_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_multiple_store_iter_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let k = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let s1 = k
|
|
.open_single("store_1", StoreOptions::create())
|
|
.expect("opened");
|
|
let s2 = k
|
|
.open_single("store_2", StoreOptions::create())
|
|
.expect("opened");
|
|
|
|
let mut writer = k.write().expect("writer");
|
|
// Write to "s1"
|
|
s1.put(&mut writer, "foo", &Value::I64(1234))
|
|
.expect("wrote");
|
|
s1.put(&mut writer, "noo", &Value::F64(1234.0.into()))
|
|
.expect("wrote");
|
|
s1.put(&mut writer, "bar", &Value::Bool(true))
|
|
.expect("wrote");
|
|
s1.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
|
|
.expect("wrote");
|
|
s1.put(&mut writer, "héllò, töűrîst", &Value::Str("Emil.RuleZ!"))
|
|
.expect("wrote");
|
|
s1.put(&mut writer, "你好，遊客", &Value::Str("米克規則"))
|
|
.expect("wrote");
|
|
// &mut writer to "s2"
|
|
s2.put(&mut writer, "foo", &Value::I64(1234))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "noo", &Value::F64(1234.0.into()))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "bar", &Value::Bool(true))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "baz", &Value::Str("héllo, yöu"))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "héllò, töűrîst", &Value::Str("Emil.RuleZ!"))
|
|
.expect("wrote");
|
|
s2.put(&mut writer, "你好，遊客", &Value::Str("米克規則"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
|
|
let reader = k.read().unwrap();
|
|
|
|
// Iterate through the whole store in "s1"
|
|
let mut iter = s1.iter_start(&reader).unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "bar");
|
|
assert_eq!(val, Value::Bool(true));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "baz");
|
|
assert_eq!(val, Value::Str("héllo, yöu"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "foo");
|
|
assert_eq!(val, Value::I64(1234));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "héllò, töűrîst");
|
|
assert_eq!(val, Value::Str("Emil.RuleZ!"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterate through the whole store in "s2"
|
|
let mut iter = s2.iter_start(&reader).unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "bar");
|
|
assert_eq!(val, Value::Bool(true));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "baz");
|
|
assert_eq!(val, Value::Str("héllo, yöu"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "foo");
|
|
assert_eq!(val, Value::I64(1234));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "héllò, töűrîst");
|
|
assert_eq!(val, Value::Str("Emil.RuleZ!"));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterate from a given key in "s1"
|
|
let mut iter = s1.iter_from(&reader, "moo").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterate from a given key in "s2"
|
|
let mut iter = s2.iter_from(&reader, "moo").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterate from a given prefix in "s1"
|
|
let mut iter = s1.iter_from(&reader, "no").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
|
|
// Iterate from a given prefix in "s2"
|
|
let mut iter = s2.iter_from(&reader, "no").unwrap();
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "noo");
|
|
assert_eq!(val, Value::F64(1234.0.into()));
|
|
let (key, val) = iter.next().unwrap().unwrap();
|
|
assert_eq!(str::from_utf8(key).expect("key"), "你好，遊客");
|
|
assert_eq!(val, Value::Str("米克規則"));
|
|
assert!(iter.next().is_none());
|
|
}
|
|
|
|
#[test]
|
|
fn test_store_multiple_thread_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_multiple_thread_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
fs::create_dir_all(root.path()).expect("dir created");
|
|
|
|
let rkv_arc = Arc::new(RwLock::new(
|
|
Rkv::new::<SafeMode>(root.path()).expect("new succeeded"),
|
|
));
|
|
let store = rkv_arc
|
|
.read()
|
|
.unwrap()
|
|
.open_single("test", StoreOptions::create())
|
|
.expect("opened");
|
|
|
|
let num_threads = 10;
|
|
let mut write_handles = Vec::with_capacity(num_threads as usize);
|
|
let mut read_handles = Vec::with_capacity(num_threads as usize);
|
|
|
|
// Note that this isn't intended to demonstrate a good use of threads.
|
|
// For this shape of data, it would be more performant to write/read
|
|
// all values using one transaction in a single thread. The point here
|
|
// is just to confirm that a store can be shared by multiple threads.
|
|
|
|
// For each KV pair, spawn a thread that writes it to the store.
|
|
for i in 0..num_threads {
|
|
let rkv_arc = rkv_arc.clone();
|
|
write_handles.push(thread::spawn(move || {
|
|
let rkv = rkv_arc.write().expect("rkv");
|
|
let mut writer = rkv.write().expect("writer");
|
|
store
|
|
.put(&mut writer, i.to_string(), &Value::U64(i))
|
|
.expect("written");
|
|
writer.commit().unwrap();
|
|
}));
|
|
}
|
|
for handle in write_handles {
|
|
handle.join().expect("joined");
|
|
}
|
|
|
|
// For each KV pair, spawn a thread that reads it from the store
|
|
// and returns its value.
|
|
for i in 0..num_threads {
|
|
let rkv_arc = rkv_arc.clone();
|
|
read_handles.push(thread::spawn(move || {
|
|
let rkv = rkv_arc.read().expect("rkv");
|
|
let reader = rkv.read().expect("reader");
|
|
let value = match store.get(&reader, i.to_string()) {
|
|
Ok(Some(Value::U64(value))) => value,
|
|
Ok(Some(_)) => panic!("value type unexpected"),
|
|
Ok(None) => panic!("value not found"),
|
|
Err(err) => panic!("{}", err),
|
|
};
|
|
assert_eq!(value, i);
|
|
value
|
|
}));
|
|
}
|
|
|
|
// Sum the values returned from the threads and confirm that they're
|
|
// equal to the sum of values written to the threads.
|
|
let thread_sum: u64 = read_handles
|
|
.into_iter()
|
|
.map(|handle| handle.join().expect("value"))
|
|
.sum();
|
|
assert_eq!(thread_sum, (0..num_threads).sum());
|
|
}
|
|
|
|
#[test]
|
|
fn test_use_value_as_key_safe() {
|
|
let root = Builder::new()
|
|
.prefix("test_use_value_as_key_safe")
|
|
.tempdir()
|
|
.expect("tempdir");
|
|
let rkv = Rkv::new::<SafeMode>(root.path()).expect("new succeeded");
|
|
let store = rkv
|
|
.open_single("store", StoreOptions::create())
|
|
.expect("opened");
|
|
|
|
{
|
|
let mut writer = rkv.write().expect("writer");
|
|
store
|
|
.put(&mut writer, "foo", &Value::Str("bar"))
|
|
.expect("wrote");
|
|
store
|
|
.put(&mut writer, "bar", &Value::Str("baz"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
// It's possible to retrieve a value with a Reader and then use it
|
|
// as a key with a Writer.
|
|
{
|
|
let reader = &rkv.read().unwrap();
|
|
if let Some(Value::Str(key)) = store.get(reader, "foo").expect("read") {
|
|
let mut writer = rkv.write().expect("writer");
|
|
store.delete(&mut writer, key).expect("deleted");
|
|
writer.commit().expect("committed");
|
|
}
|
|
}
|
|
|
|
{
|
|
let mut writer = rkv.write().expect("writer");
|
|
store
|
|
.put(&mut writer, "bar", &Value::Str("baz"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
// You can also retrieve a Value with a Writer and then use it as a key
|
|
// with the same Writer if you copy the value to an owned type
|
|
// so the Writer isn't still being borrowed by the retrieved value
|
|
// when you try to borrow the Writer again to modify that value.
|
|
{
|
|
let mut writer = rkv.write().expect("writer");
|
|
if let Some(Value::Str(value)) = store.get(&writer, "foo").expect("read") {
|
|
let key = value.to_owned();
|
|
store.delete(&mut writer, key).expect("deleted");
|
|
writer.commit().expect("committed");
|
|
}
|
|
}
|
|
|
|
{
|
|
let name1 = rkv
|
|
.open_single("name1", StoreOptions::create())
|
|
.expect("opened");
|
|
let name2 = rkv
|
|
.open_single("name2", StoreOptions::create())
|
|
.expect("opened");
|
|
let mut writer = rkv.write().expect("writer");
|
|
name1
|
|
.put(&mut writer, "key1", &Value::Str("bar"))
|
|
.expect("wrote");
|
|
name1
|
|
.put(&mut writer, "bar", &Value::Str("baz"))
|
|
.expect("wrote");
|
|
name2
|
|
.put(&mut writer, "key2", &Value::Str("bar"))
|
|
.expect("wrote");
|
|
name2
|
|
.put(&mut writer, "bar", &Value::Str("baz"))
|
|
.expect("wrote");
|
|
writer.commit().expect("committed");
|
|
}
|
|
|
|
// You can also iterate (store, key) pairs to retrieve foreign keys,
|
|
// then iterate those foreign keys to modify/delete them.
|
|
//
|
|
// You need to open the stores in advance, since opening a store
|
|
// uses a write transaction internally, so opening them while a writer
|
|
// is extant will hang.
|
|
//
|
|
// And you need to copy the values to an owned type so the Writer isn't
|
|
// still being borrowed by a retrieved value when you try to borrow
|
|
// the Writer again to modify another value.
|
|
let fields = vec![
|
|
(
|
|
rkv.open_single("name1", StoreOptions::create())
|
|
.expect("opened"),
|
|
"key1",
|
|
),
|
|
(
|
|
rkv.open_single("name2", StoreOptions::create())
|
|
.expect("opened"),
|
|
"key2",
|
|
),
|
|
];
|
|
{
|
|
let mut foreignkeys = Vec::new();
|
|
let mut writer = rkv.write().expect("writer");
|
|
for (store, key) in fields.iter() {
|
|
if let Some(Value::Str(value)) = store.get(&writer, key).expect("read") {
|
|
foreignkeys.push((store, value.to_owned()));
|
|
}
|
|
}
|
|
for (store, key) in foreignkeys.iter() {
|
|
store.delete(&mut writer, key).expect("deleted");
|
|
}
|
|
writer.commit().expect("committed");
|
|
}
|
|
}
|
|
|